Jee Say won't stand.
LBH is probably the PAP's choice. But TCB will win the next one. He has already started his campaign in a low-key manner, and his visits to the 2 SDP rallies were to garner support from SDP supporters, who largely voted for TJS in PE2011.
With the middle ground support (mainly WP supporters) and SDP supporters, TCB will win hands down.